61-year-old Ayub Ali was working at Aunt Molly's Food Store in North Lauderdale when a man walked in and pulled a gun on him. Surveillance video released by the Broward County Sheriff's Office shows the suspect following Ali around the counter and forcing him to open the cash register at gunpoint.

According to deputies, after robbing the register and leaving the store, the suspect returned to shoot Ali. He was later transported to a local hospital, where he was pronounced dead.

Ali was a father of four. Two of his children, a son and a daughter, survived the mass shooting that killed 17 and injured 17 others at Marjory Stoneman Douglas High School.

The suspect reportedly go away with around $500 in cash. He is described as wearing a black vest, reddish-orange shorts with a black and white stripe on the sides, reddish-orange slides and a skull cap with 'Miami' stitched on the front."

Authorities are asking anyone with information about the robbery to contact the Broward County Sheriff's Office homicide detectives at 954-321-4231 or Broward County Crime Stoppers at 954-493-8477.